I am stupid. I did try this at last summer once - going to the swamp when I have evening shift at work - and then I did decide that I will do it never again. Work is so hard even when you ain't tired. And now..? I did get sleep at 00:00, wake up at 03:50 and head to the swamp, from where I did get back home at 07:30. And sleep after that..? Just on hour. Terrible headache now, and under half an hour I must get to work. It's gonna be long evening.